3. Which of the following is/are the process/es to igneous rocks? A. sedimentation B. recrystallization C. solidification and crystallization D. solidification and recrystallization
4. Which type of igneous rocks based on composition has the highest amount of silica content? A. felsic B. intermediate C. mafic D. ultramafic
5. What happens to the molten rocks when they reach the Earth’s surface? A. They flow continuously. B. They cool down and solidify. C. Their temperature remains the same. D. They remain semi-liquid molten rocks.
6. Which of the following is NOT an extrusive igneous rock? A. basalt B. granite C. obsidian D. rhyolite
7. Which type of igneous rock forms from lava on Earth's surface? A. clastic B. extrusive C. intrusive D. non-clastic
8. Which type of igneous rock forms when magma hardens beneath Earth's surface? A. clastic B. extrusive C. intrusive D. non-clastic
9. What is the size of the crystals if the rock cools slowly and forms below the Earth’s surface? A. large B. no crystal C. small D. none of the above
10. Which of the following is NOT an intrusive igneous rock? A. diorite B. gabbro C. granite D. obsidian
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